Cloth polisher for shoe-dressing machines.



C. F. BURKHART. CLOTH POLISHER FOR SHOE DRESSING MACHINES.

' APPLICATION FlLED FEB. 3. 1914. 1,210,044. Patented Dec. 26,1916.

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CLOTH POLISHER FOR SHOE DRESSING MACHINES.

APPLICATION FILED FEB. 3. 1914.

1,216,044. Patented Dec. 26,1916.

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CHARLES F. BURKHART. OF NEW YORK, N. 1., ASSIGNOR TO BURKI-IA-RT CORPORATION, OF BUFFALO, NEW YORK, A CORPORATION OF NEW YORK CLOTH POLISI-IER FOR SHOE-DRESSING MACHINES.

Specification of Letters Patent.

Patented Dec. 26, 1916.

Application filed February 3, 1914. Serial No. 816,272.

To all whom it may concern:

Be it known that I, CrIAnLns F. BURK- HART, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Cloth Polishers for Shoe-Dressing Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which-it appertains to make and use the same. I

This invention relates to cloth polishers for shoe dressing machines and has for an object to provide an improved devicefor applying a clothor other fabric band'frictionally to a shoe being operated upon.

A further object of the invention is to provide a frame of improved resilient fea tures having a cloth or other fabric band secured thereto in improved manner with improved means foroperating the frame and band to secure frictional action.

A further object of the invention is to provide improved means'for raising and lowering the frame intov and out of engagement with the shoe being operated upon.

A further-object ofthe invention is to provide improved means for limiting the spread of the cloth. holding frame when the cloth is fractured.

With these and other objects in view the invention comprises certain novel constructions, combinations and arrangement of parts as will behereinafter more fully described and claimed.

In the drawings: Figure 1-is a perspective view of the polishing head showing the under or polishing side of the cloth band. Fig. 2 is a view in end elevationas indicated by arrow 2 in Fig. 1. Fig. 3 isa perspective view of the polishing head showing the polishing band upon thetop or nonengaging side. Fig. 4: is a view of the cloth polisher mechanism in associated position but removed from any-casing or supporting means.

Fig. 5 is a sectional view taken on line 5-5 of Fig. 4. Fig. 6 is a sectional view of one of the air cushions for cushioning the reciprocation of the polisher heads. Fig. 7 is a view of the polisher head shown in side elevation. Fig. 8 is a detail sectional view showing the cam and rack for raising and, lowering the polisher heads. M

Like characters of reference designate corresponding parts throughout the several views.

The improved polisher which forms the subject matter of this application is adapted to use in shoe dressing machines of various designs but especially the designs of shoe polishing machines such as form a series of applications now pending and patents issued to this applicant. In such shoe polishing machines a housing is employed, a fragment of which is shown at 10 in Fig. -1. To this housing the mechanism is secured, one part being a prime mover 11 operating the drive shaft 12 in any approved manner and by any approved train of gearing as the worm gearing 13 and 1 1 with sprocket chain 15. It is to be understood, however, that the particular form of gearing or transmission mechanism is not material to the present invention. As shown in the drawings the worm gearing 14 drives a gear 16 located in a housing 17 which in turn carries a shaft 18 with a cam 19 carried by said shaft. Upon the cam 19 which is preferably an ordinary eccentric. a bar 20 operates which carries a rack 21 intergeared with a pinion 22 upon the shaft 23. The shaft 23 carries sprockets 24: over which sprocket chains 25 pass, the lower ends of which engage a yoke 26 pivoted at 27 to bearings 28 which are preferably rigidly secured to the housing. As will be noted especially from Fig. 1 the pivots 27 are in alinement with the shaft 12, which said shaft is mounted in a bearing 29 and the bearing journaled in a block 30 rigidly mounted so that the bearing 29 carried by the yoke 26 moves therewith in the blocks 30. Journaled also in the bearing 29 is a shaft 31 having a gear 32 intergeared with a worm 33 upon the shaft 12. The shaft 31 carries a wrist-pin 34 upon which are journaled pitmen. 35 and 36 extending upon opposite sides thereof so that as the shaft 31 is rotated by the worm gearing from the sprocket chain 15 the pitdash-pots are provided consisting of cylinders 41 carried by the yoke 26 in which a piston 42 is mounted to reciprocate, such piston being provided with a rack 43 engaged by a segmental gear 44 carried upon the shaft 39 so that as the shafts 39 are oscillated upon their axes the piston 42 is reciprocated toward the opposite ends of the cylinders which are closed as indicated. It will be obvious, therefore, that as the prime mover 11 is actuated the motion will be transmitted to start the oscillation of the polisher heads and likewise to lower the yoke 26 carrying the polisher heads therewith, such lowering action being accomplished by the cam '19, rack 21 and pinion 22.

The polisher head itself comprises a bracket member 45 carried rigidly by and prefer ably integral with the shaft 39 and also preferably carrying the stud 40 to which the pitmen 35.and 36 are pivoted. Thebracket 45 carries bowed members 46 and 47 which may be though not necessarily spring members. At their extremes the bowed members 46 and 47 carry attaching members 48 to which the cloth polisher 49 is attached, such attaching means not forming any part of the present invention but being disclosed in Patent No. 1,051,387, issued Jan. 28th, 1913, and in reissue application Serial No. 768,171,

filed May 16th, 1913, which includes a roll,

hem or other form of thickening shown at 50 slidably inserted in the dovetailed groove of the member 48.

Extending across the arc of the bowed members 46 and 47 are rods 51 and 52 respectively which extend through the sides of the bowed members and carry springs 53 and 54, the tensions of which are respectively and independently adjusted by tension nuts 55 and 56.

In one embodiment, that for instance shown at Figs. 1, 3 and 4 the members 48 are provided with ears 57 and 58 to which are secured straps 59 and 60. The straps 59 and 60 may be simply secured permanently to the ears 57 and 5 8 as shown at Figs. 1 and 4 or may be provided with buckles as indicated at 61 and 62 in Fig. 3 by which the length of such straps may be adjusted in the usual well known manner. Instead of employing such straps forlimiting the expansion of the bowed members 46 and 47 the rods 52 maybe provided with nuts 52 as shown at Figs. 2 and 7 in which case the straps 60 areomitted and the expansion regulated such nuts 52.

will be noted at Fig. 1 the edge 63 of the cloth polisher is arranged to be curved orfbowed downwardly to operate over the,toe of a shoe being polished, such curving or bowing being accomplished by curving or bowing the, attaching member as stowage; ca a fiia'uyat Figs. 3 and .7. The bowing of the cloth 'polisher is disclosed in the aforesaid patent and is not claimed herein.

In operation it is found desirable to have the fabric 49 provided with considerable slack when not in operation and the greater degree of slack at the downwardly curved edge 63 which operates over the toe of the shoe. The slack is indicated at Figs. 1, 2 and 3, Fig. 2 especially showing the difference in slack between the edges of the fabric. It is to be understood that when the polisher comes into operative engagement with the shoe the slack is taken up over the shoe and the tension of the springs 54 employed to hold such fabric at the desired tension in engagement with the shoe and to permit the operation of the device with shoes of different sizes and shapes. The straps 60 and the nuts 52 also operate to prevent the springs 53 and 54 from expanding the bowed members 46 and 47 to the extent of engaging against each other or against any adjacent part of the mechanism or structure.

In the usual construction it will be found convenient to construct the bowed members 46 and 47 of material which is 'of itself resilient and exert some tension upon the strap 60 or rod 52. Such spring construction or resiliency is, however, wholly unimportant to the present invention as the springs 54 provide all the necessary adjustment of tension.

With the device associated as shown at Fig. 4 it is obvious that when the motor is driven the yoke 26 carrying the polishing heads will be lowered into operative position and simultaneously the polishingheads will be reciprocated through the medium of the transmission mechanism hereinbefore described which will cause the polishing cloths 49 to slidably engage over the top and sides of the shoes being operated'upon. the

curved portion 63 of the cloth rolling down 3 over the top of the shoe so that all of the vamp of the shoe is subjected to the frictional rubbing of the fabric polisher.

I claim: v a

1. In a cloth polisher for shoe dressing machines, a polishing head embodying supporting members spaced apart, means to engage a fabric along the supporting members, means to exert tension through the supporting members upon the fabric, and means tovary the tension so exerted.

2. In a polisher for shoe dressing machines, a plurality of pairs of -supports movable toward and away from each other; means to 'engag'ea fabric upon the supports; and means to exert varying degrees of ten- 's'ion upon each pair tending to move the supports away from eachother.

3. In a 'polisher for shoe dressing machines, a pair of attaching members -spaced taching members; and means to limit the expanding movement of the attaching members under the action of the tensions.

4. In a polisher for shoe dressing machines, spaced attaching members arranged approximately in parallelism; means tending to force the corresponding ends of the attaching members apart; flexible means connecting the corresponding ends and limiting the movement; and means to attach a polisher to the attaching members.

5. In a polisher for shoe dressing machines, a pair of attaching members disposed approximately in parallelism; means for yieldingly forcing the corresponding ends apart with adjustable and independent ten sion; flexible members connecting the corresponding ends of the attaching members; and means to vary the length of the flexible members.

6. In a polishing mechanism for shoe dressing machines, a frame mounted to raise and lower; a polishing head mounted to oscillate upon the frame; a prime mover; a crank shaft j ournaled upon the frame; a pitman positioned to transmit motion from the crank shaft to oscillate the polishing head; a transmission mechanism and means receiving power from said transmission mechanism to lower the frame and rotate the shaft.

9. In a polisher for shoe dressing machines, an oscillating polishing head; a bearing for said head; means to oscillate the head in the bearing; and a. fluid cushion adapted to relieve the polishing head at each extreme of its oscillatory movement.

8. In a polisher for shoe dressing machines, a polishing head; a bearing for said head; means to oscillate the said polishing head in said bearing; a cylinder mounted adjacent the bearing; a piston mounted to reciprocate in the cylinder; a rack carried by the piston; a gear carried by the shaft engaging the piston; and means to close the opposite ends of the cylinder to retain fluid in front of the opposite ends of the piston.

9. In a polisher for shoe dressing machines, a polishing head having spaced supporting members; a fabric supported by the supporting members; means holding the supporting members in such relation as to permit the fabric to remain slack; and means to adjust the tension of the supporting members.

10. In a polisher for shoe dressing machines, supporting members; a fabric carried upon the supporting members; means to hold the supporting members resiliently away from each other; means to limit the expansion of the supporting members, said means limiting the expansion of the members to an interval less than the extent of the fabric; and means to exert varying tension upon opposite sides of the fabric.

11. In a polisher for shoe dressing machines; supporting members spaced apart; means permitting a yielding movement of the supporting members toward each other but preventing an expansion of the members from each other beyond the normal; and a fabric carried by the supporting members, said fabric being long enough to remain slack when the supporting members are at their outward extremity of movement, one edge of said fabric having a greater degree of slackness than the opposite edge.

12. In a polisher for shoe dressing machines, supporting members spaced apart; means to yieldingly hold the members spaced apart to the limit of their movement; a fabric carried by the supporting members of greater length than the normal interval between the supporting members, said difference in length increasing from one side to the other of said fabric.

13. In a polisher for shoe dressing machines, supporting members spaced apart; means to hold the supporting members yieldingly spaced apart to their normal amplitude; a fabric engaging device carried by the supporting members, said engaging device being curved downwardly at one edge; a fabric carried by the engaging device, said fabric being longer than the interval between the supporting members to be normally slack, the said degree of slackness bging greater at the downwardly curved e ge.

In testimony whereof I atfix my signature in presence of two witnesses.

CHARLES F. BURKI-IART.

Witnesses:

- L. L. MoRmLL, Geo. M. Bonn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

